Answers

2016-07-20T19:51:33+08:00
Oxygen, Iron,  Silicon, Aluminum, Calcium, Potassium.
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2016-07-20T19:56:45+08:00
Oxygen (most abundant) - 46.6%
Silicon - 27.7%
Aluminum - 8.1%
Iron - 5%
Calcium - 3.6%
Sodium - 2.8%
Potassium - 2.6%
Magnesium - 2.1%
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